This is a tip I learned from an article I read, and unfortunately I can't remember the magazine! It's such an easy idea, one that I surely could have thought of on my own...but didn't.
Instead of buying the whipped cream cheese at the store, buy a regular block of cream cheese and whip it yourself! Either way you are buying an 8 oz package, but if you buy the block and whip it yourself (with an electric mixer) you will have more spread and pay a cheaper price. I noticed today at the grocery store that the 8 oz block of cream cheese is almost $1 cheaper than an 8 oz tup of whipped cream cheese.
So, take it or leave it! But, I say make the extra step...the pennies add up!
(Thanks for one of the photos, Cami, from Emotional Vomiting)
Update: Please see this link for instructions on whipping the cream cheese.